[PATCH v2 1/2] powerpc/selftest: Add gettimeofday() benchmark

[Denis Kirjanov]

On 9/28/15, Michael Neuling <mikey at neuling.org> wrote:
> On Fri, 2015-09-25 at 11:37 +0200, Gabriel Paubert wrote:
>> On Fri, Sep 25, 2015 at 12:28:30PM +0300, Denis Kirjanov wrote:
>> > On 9/25/15, Arnd Bergmann <arnd at arndb.de> wrote:
>> > > On Friday 25 September 2015 14:01:39 Michael Neuling wrote:
>> > >> This adds a benchmark directory to the powerpc selftests and adds a
>> > >> gettimeofday() benchmark to it.
>> > >>
>> > >> Suggested-by: Michael Ellerman <mpe at ellerman.id.au>
>> > >> Signed-off-by: Michael Neuling <mikey at neuling.org>
>> > >>
>> > >
>> > > Any reason for keeping this powerpc specific? It seems generally
>> > > useful.
>> > > and portable.
>> > You're right. Moreover, we can put some comment to the benchmark why
>> > we've made such decision to add it (reference to the commit
>> > "powerpc/vdso: Avoid link stack corruption in __get_datapage()")
>>
>> Why gettimeofday? Isn't clock_gettime the modern variant?
>
> We can do either here really.  I just wanted to test __get_datapage()
> really.  I just stole the benchmark from Anton, which turned into mpe
> wanting it in selftests.  I dumped it in powerpc mostly because I knew
> mpe would take it (ie. I'm was being lazy).

Yeah, so the quickest way would be to apply the patch as is. Then
someone can make it generic.
So now it depends on Michael's decision :)
>
>> BTW: dows anyone receive 2 copies of every messge in this thread ?
>
> I'm not.
>
> Mikey
>
>>
>> I do, and I suspect that this is due to the Cc: list having both
>> linuxppc-dev at ozlabs.org and linuxppc-dev at lists.ozlabs.org. I removed the
>> former for this reply.
>>
>>     Gabriel
>
>